Unified Interior Regions

Region 4: Mississippi Basin

Regions L2 Landing Page Tabs

Filter Total Items: 237
Date published: April 16, 2016

Spatial Analysis Support for Coastal Wetlands Planning, Protection and Restoration Act (Breaux Bill) Planning Activities

WARC first implemented geographic information systems (GIS) in 1980 to help monitor the nature and extent of wetland habitat changes. The center continues to use GIS, remote sensing, and other computer based technologies to address a wide range of natural resource related issues. 

Date published: April 16, 2016
Status: Active

Visual Guide to Louisiana Plants: A Web Based Searchable Plant Database and Photo Gallery of the Plants of Louisiana

Quality photographs of plant species are rare on the internet, often difficult to find, and are generally copyrighted, preventing them from being used by government agencies and non-government organizations, academics and the general public.

Date published: April 15, 2016

Morphology Modeling in Support of the Louisiana Coastal Master Plan

In support of Louisiana’s 2012 Coastal Master Plan, USGS WARC scientists have developed a spatially explicit wetland morphology model and coupled it with other predictive models to help predict the effects of protection and restoration projects. 

Date published: April 14, 2016
Status: Active

Geographic Information and Technical Support

USGS WARC first implemented geographic information systems (GIS) in 1980 to assist in monitoring the nature and extent of wetland habitat changes. Today, geographers and support staff create, maintain, and use geospatial data to analyze restoration efforts in Louisiana. 

Date published: April 14, 2016

Louisiana Coastal Area (LCA) Ecosystem Restoration Program – Adaptive Management and Monitoring Planning and Implementation Support

Adaptive management (AM) is an iterative science-based process that accepts uncertainties in ecological systems and uses best available science and technology such as research, modeling, experimentation, monitoring and evaluation to address uncertainties. 

Contacts: Michelle Meyers
Date published: April 13, 2016

Understanding Coastal Change

Scientists perform a range of studies that document, assess, and model coastal change, risk, and vulnerability. Studies include historical shoreline change, the geologic structure and history of coastal regions, sediment supply and transport, sea-level rise, and how extreme storm events affect rates and impacts of coastal change.

Date published: April 13, 2016

Geologic Hazards and Catastrophic Events

We study the distribution and hazard potential of coastal and submarine events such as earthquakes and submarine landslides and associated tsunami potential, hurricane induced coastal inundation, extreme storms, sea-level rise and oil and gas spills. We also model development to help evaluate and forecast coastal hazard probability and occurrence.

Date published: April 13, 2016

Ocean Resources for America's Needs

Our scientists conduct research studies focused on geologic mapping, sampling and understanding of mineral and energy resources and studies of the geologic setting and processes to inform renewable energy development offshore.

Date published: April 13, 2016

Coastal and Marine Ecosystem Science

We bring together multidisciplinary expertise focused on developing tools and models to improve understanding of how healthy ecosystems function as well as how they respond to environmental changes and human impacts including ecosystem restoration. Research studies address coral reef, coastal wetland, benthic habitat and groundwater resources.

Date published: April 12, 2016
Status: Active

USGS Library

The USGS Library, managed by CSAS&L, supports all fundamental scientific research conducted within USGS. It serves both internal and external customers with comprehensive access to literature, data, and information necessary understand USGS mission areas and make critical decisions about how to proceed with research initiatives and investigations in the earth and natural sciences.

Date published: April 11, 2016
Status: Active

Nonindigenous Aquatic Species (NAS) Program

Welcome to the Nonindigenous Aquatic Species (NAS) information resource for the United States Geological Survey. Located at Gainesville, Florida, this site has been established as a central repository for spatially referenced biogeographic accounts of introduced aquatic species. The program provides scientific reports, online/realtime queries, spatial data sets, distribution maps, and general...

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Year Published: 2020

Assessment of burrowing behavior of freshwater juvenile mussels in sediment

Standard laboratory sediment toxicity methods have been adapted for conducting toxicity tests with juvenile freshwater mussels. However, studies looking at juvenile mussel burrowing behavior at the water-sediment interface are limited. Juvenile mussels burrow in sediment for the first 0 to 4 yr of life but also may inhabit the sediment-water...

Kemble, Nile E.; Besser, John M.; Steevens, Jeffery; Hughes, Jamie P.

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Year Published: 2020

Topographic, soil, and climate drivers of drought sensitivity in forests and shrublands of the Pacific Northwest, USA

Climate change is anticipated to increase the frequency and intensity of droughts, with major impacts to ecosystems globally. Broad-scale assessments of vegetation responses to drought are needed to anticipate, manage, and potentially mitigate climate-change effects on ecosystems. We quantified the drought sensitivity of vegetation in the Pacific...

Cartwright, Jennifer M.; Littlefield, Caitlin E; Michalak, Julia; Lawler, Joshua J.; Dobrowski, Solomon

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Year Published: 2020

Detecting cover crop end-of-season using VENµS and sentinel-2 satellite imagery

Cover crops are planted during the off-season to protect the soil and improve watershed management. The ability to map cover crop termination dates over agricultural landscapes is essential for quantifying conservation practice implementation, and enabling estimation of biomass accumulation during the active cover period. Remote sensing detection...

Gao, Feng; Anderson, Martha; Hively, W. Dean

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Year Published: 2020

Double exposure and dynamic vulnerability: Assessing economic well-being, ecological change and the development of the oil and gas industry in coastal Louisiana

The oil and gas industry has been a powerful driver of economic change in coastal Louisiana for the latter half of the 20th century and into the 21st. Yet, the overall impact of the industry on the economic well-being of host communities is varied, both spatially and temporally. While the majority of Louisiana’s oil and gas production now occurs...

Hemmerling, Scott; Carruthers, Tim J.B.; Hijuelos, Ann; Bienn, Harris C.

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Year Published: 2020

Larval diet of the rare caddisfly Glyphopsyche missouri (Trichoptera: Limnephilidae) in Missouri, USA

No abstract available.

Rhodes, Russell G.; Poulton, Barry C.; Mabee, William R.; Bowles, David E.

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Year Published: 2020

Estimating flood magnitude and frequency on gaged and ungaged streams in Maine

Accurate estimates of flood frequency and magnitude on rivers and streams in Maine are a key component of effective flood risk management, flood mitigation, and flood recovery programs for the State. Flood-frequency estimates are published here for 148 streamgages in and adjacent to Maine. Equations are provided for users to compute flood-...

Lombard, Pamela J.; Hodgkins, Glenn A.
Lombard, P.J., and Hodgkins, G.A., 2020, Estimating flood magnitude and frequency on gaged and ungaged streams in Maine: U.S. Geological Survey Scientific Investigations Report 2020–5092, 56 p., https://doi.org/10.3133/sir20205092.

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Year Published: 2020

Predicting multi-species foraging hotspots for marine turtles in the Gulf of Mexico

Quantifying the distribution of animals and identifying underlying characteristics that define suitable habitat are essential for effective conservation of free-ranging species. Prioritizing areas for conservation is important in managing a geographic extent that has a high level of disturbance and limited conservation resources. We examined the...

Fujisaki, Ikuko; Hart, Kristen; Bucklin, David N.; Iverson, Autumn R.; Rubio, Cynthia; Lamont, Margaret; Miron, Raul de Jesus G.D.; Burchfield, Patrick M.; Pena, Jaime; Shaver, Donna J.

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Year Published: 2020

An interactive data visualization framework for exploring geospatial environmental datasets and model predictions

With the rise of large-scale environmental models comes new challenges for how we best utilize this information in research, management and decision making. Interactive data visualizations can make large and complex datasets easier to access and explore, which can lead to knowledge discovery, hypothesis formation and improved understanding. Here,...

Walker, Jeffrey D; Letcher, Benjamin; Rodgers, Kirk D.; Muhlfeld, Clint C.; D'Angelo, Vincent S.

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Year Published: 2020

Estimated groundwater withdrawals from principal aquifers in the United States, 2015

In 2015, about 84,600 million gallons per day (Mgal/d) of groundwater were withdrawn in the United States for various uses including public supply, self-supplied domestic, industrial, mining, thermoelectric power, aquaculture, livestock, and irrigation. Of this total, about 94 percent (79,200 Mgal/d) was withdrawn from principal aquifers, which...

Lovelace, John K.; Nielsen, Martha G.; Read, Amy L.; Murphy, Chid J.; Maupin, Molly A.
Lovelace, J.K., Nielsen, M.G., Read, A.L., Murphy, C.J., and Maupin, M.A., 2020, Estimated groundwater withdrawals from principal aquifers in the United States, 2015 (ver. 1.2, October 2020): U.S. Geological Survey Circular 1464, 70 p., http://doi.org/10.3133/cir1464.

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Year Published: 2020

Metamorphosis and the impact of contaminants on ecological subsidies

Animals with complex life histories such as aquatic insects and amphibians link freshwater and terrestrial ecosystems when they transition from water to land during development. This transition requires metamorphosis from juvenile to adult life stages. Metamorphosis is a stressful and ecologically sensitive life history event. Exposure to...

Wesner, Jeff; Kraus, Johanna M.; Henry, Brianna L.; Kerby, Jacob
Wesner, J., Kraus, J.M., Henry, B., and Kerby, J., 2020, Metamorphosis and the impact of contaminants on ecological subsidies, in Kraus, J.M., Walters, D.M., and Mills, M.A., eds., Contaminants and Ecological Subsidies: The Land-Water Interface: Cham, Springer International Publishing, p. 111-125. https://doi.org/10.1007/978-3-030-49480-3_6

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Year Published: 2020

Introduction: Ecological subsidies as a framework for understanding contaminant fate, exposure, and effects at the land-water interface

Ecologists have long recognized that ecological subsidies (the flow of organic matter, nutrients, and organisms between ecosystems) can strongly affect ecosystem processes and community structure in the recipient ecosystem. Animal movements, organic matter flows, and food web dynamics between linked aquatic and terrestrial systems can also...

Walters, David; Kraus, Johanna M.; Mills, Marc A.

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Year Published: 2020

Practical considerations for the incorporation of insect-mediated contaminant flux into ecological risk assessments

Insect-mediated contaminant flux is truly an interdisciplinary concept that merges ideas from many technical areas of science (e.g., environmental chemistry, landscape ecology, and entomology). This chapter introduces risk assessors to this emerging and ecologically relevant concept by distilling the main mechanisms that drive insect-mediated...

Otter, Ryan R.; Beaubien, Gale B.; Olson, Connor I.; Walters, David; Mills, Marc A.
Otter, R.R., Beaubien, G.B., Olson, C.I., Walters, D.M., and Mills, M.A., 2020, Practical considerations for the incorporation of insect-mediated contaminant flux into ecological risk assessments, in Kraus, J.M., Walters, D.M., and Mills, M.A., eds., Contaminants and Ecological Subsidies: The Land-Water Interface: Cham, Springer International Publishing, p. 179-195. https://doi.org/10.1007/978-3-030-49480-3_9

Filter Total Items: 216
Image: Big Sioux River at Akron, Iowa, 2010
March 16, 2010

Big Sioux River at Akron, Iowa, 2010

U.S. Geological Survey hydrologic technician measuring streamflow at the Big Sioux River at Arkon, Iowa, on March 17, 2010, during flooding conditions.

Image: Big Sioux River at Akron, Iowa, 2010
March 16, 2010

Big Sioux River at Akron, Iowa, 2010

Flooding conditions at USGS streamgage 06485500, Big Sioux River at Arkon, Iowa, on March 17, 2010. Daily mean streamflow on this date was more than 30,000 cubic feet per second.

Highest stream mycotoxin concentrations were observed during spring snowmelt conditions in agricultural settings
January 2, 2010

Stream Mycotoxin Concentrations were Highest During Spring Snowmelt

Highest stream mycotoxin concentrations were observed during spring snowmelt conditions in agricultural settings such as pictured in this Iowa stream.

Baseflow measurements of field parameters (dissolved oxygen, water temperature, specific conductance, and pH)
September 14, 2009

Baseflow measurements of field parameters

The team of USGS scientists collected stream water samples before and after rainfall events for this study. In this photo a USGS scientist is taking measurements of field parameters (dissolved oxygen, water temperature, specific conductance, and pH) from New York Branch, Iowa, at low flow (baseflow) conditions.

video thumbnail: Effects of Sea-Level Rise on Coastal Wetlands in the Mississippi Delta
March 30, 2009

Effects of Sea-Level Rise on Coastal Wetlands in the Mississippi Delta

This video describes research being conducted by Dr. Karen McKee, USGS Research Ecologist, and her university partner, Dr. Julia Cherry. Their goal is to better understand the effects of sea-level rise and other global change factors on coastal wetlands in the Mississippi River Delta. This region contains over 40% of the U.S. wetlands in the lower 48 states These wetlands

video thumbnail: Simulated groundwater declines in Central Arkansas
January 6, 2009

Simulated groundwater declines in Central Arkansas

A groundwater-flow model of the Mississippi embayment was used to evaluate changes in water-level altitudes after the addition of wells that simulate potential future pumping from the Sparta aquifer in the Bayou Meto-Grand Prairie area of eastern Arkansas (shown within the black outline) for the 30-year period from 2007 through 2037. The animation portrays the time-lapse

video thumbnail: The Mississippi embayment — Where Does the Water Come From?
January 6, 2009

The Mississippi embayment — Where Does the Water Come From?

As the animation begins, the land surface of the Mississippi embayment fades away to reveal underground geologic formations (shown as shades of blue, brown, and gray surfaces). A slice deep into the earth cuts off the eastern half of the embayment so we can peer into the formations (aquifers) beneath the surface. The lower portion of different colored water wells (orange,

video thumbnail: The Mississippi embayment — a look underground
December 11, 2008

The Mississippi embayment — a look underground

Water, oil, and gas wells (shown as green lines) are drilled to hundreds or thousands of feet below land surface in an area known as the Mississippi embayment. Information gathered from these wells was used to create a 3D computer model of underground formations. Many of these formations (shown as shades of grey, blue, brown, or tan surfaces) consist of layers of sand and

Filter Total Items: 255
USGS
November 17, 2010

Approximately 13 million metric tons of rare earth elements (REE) exist within known deposits in the United States, according to the first-ever nationwide estimate of these elements by the U.S. Geological Survey.

USGS
June 15, 2010

The  Little Missouri River in Southwest Arkansas experienced a flash flood Friday, with waters that rose over 20 feet in just 5 hours, killing 20 people. In response to this severe and unusual flooding the USGS deployed a team of scientists to document and study the flow and height of the floodwater as it coursed down the Little Missouri River and its tributaries.

USGS
June 7, 2010

A team of scientists with the U.S. Geological Survey will be conducting a series of seismic profiling tests near the New Madrid Fault during the first part of June. Using the “Thumper” truck, researchers with the USGS and University of Texas hope to gather new insight into another region south of the New Madrid Fault zone that likely experienced large earthquakes 5000 to 7000 years ago.

USGS science for a changing world logo
November 9, 2009

Concentrations of several major pesticides mostly declined or stayed the same in "Corn Belt" rivers and streams from 1996 to 2006, according to a new U.S. Geological Survey study.

USGS science for a changing world logo
September 24, 2009

USGS will Grant Universities $5 Million to Beef Up Public Safety Grants totaling $5 million under the American Recovery and Reinvestment Act are being awarded to 13 universities nationwide to upgrade critical earthquake monitoring networks and increase public safety.

USGS science for a changing world logo
September 16, 2009

Levels of chloride, a component of salt, are elevated in many urban streams and groundwater across the northern U.S., according to a new government study. Chloride levels above the recommended federal criteria set to protect aquatic life were found in more than 40 percent of urban streams tested. The study was released today by the U.S. Geological Survey (USGS).

USGS science for a changing world logo
June 16, 2009

Spring nutrient delivery to the northern Gulf of Mexico is among the highest measured by the U.S. Geological Survey (USGS) in thirty years. Too many nutrients, which are essential for plant growth, are not necessarily a good thing.

USGS science for a changing world logo
May 12, 2009

This summer, boaters and anglers might notice a few foreign objects in some of the backwaters and near-shore areas of Navigation Pool 8 of the Upper Mississippi River. Scientists will deploy small orange buoys supporting plastic containers of river water at several sites at various times this summer.

USGS science for a changing world logo
April 8, 2009

USGS Shares Findings and Lessons from Ike at the 2009 National Hurricane Conference in Austin
The 2008 hurricane season made its mark on the northern Gulf of Mexico coastline by leaving it more vulnerable to future storms.

USGS science for a changing world logo
April 1, 2009

Each of the 818 large watersheds in the Mississippi/Atchafalaya River Basin (MARB) has been ranked on the basis of SPARROW model estimates of nitrogen and phosphorus yields delivered to the Gulf of Mexico by the U.S. Geological Survey (USGS), in cooperation with the U.S. Environmental Protection Agency (EPA).